Any periodical included in CNKI China periodical full-text database is a periodical of CNKI China periodical full-text database. China Journal Full-text Database (CJFD) is one of the earliest full-text databases of China journals in China, with more than 7,000 journals and130,000 papers.
Source of knowledge: 5300 kinds of core journals and full-text journals with professional characteristics published publicly in China.
Coverage: science and technology A (mathematics, physics, chemistry, life and earth), science and technology B (chemical energy and materials), science and technology C (industrial technology), agriculture, medicine and health, literature, history and philosophy, economics, politics and law, education and social science, electronic technology and information science.
Collection year: 1994. Up to now, the data integrity of more than 7,000 full-text journals has reached 98%.
Update frequency: the websites of CNKI center and database exchange service center are updated daily, and each mirror site can transmit data through the Internet or satellite to realize daily update. The album CD is updated monthly (the literature, history and philosophy album is updated bimonthly), and the special CD is updated annually.
Extended data:
China Knowledge Resources General Database provides CNKI source database, foreign language database, industrial database, agricultural database, medical database, economic database and educational database.
Among them, the comprehensive databases include China periodical full-text database, China doctoral thesis database, China excellent master thesis full-text database, China important newspapers full-text database and China important conference literary theory full-text database.
Each database provides three retrieval functions: primary retrieval, advanced retrieval and professional retrieval. Advanced retrieval function is the most commonly used.
References:
Baidu Encyclopedia-China HowNet